You can apply or remove discounts to an order manually in the application. All types of discounts are supported: per dish, per seat, and per order.
The added discount is displayed as a separate line with the name and amount.

Adding a discount

To add a discount, select the Discounts operation.

After this, a list of available discounts will open.

Select the one you need and it will be added to your order immediately. The discount:

The order amount, taking into account all discounts assigned to the order at the cash register, will be displayed in the order in the final amount. 

Removing/replacing a discount

To delete a discount added to an order, click on the line with it. In the editing window, the selected discount will be marked with a check mark and will be inactive for re-selection.

Click the Remove Discount button and the discount will be immediately removed from the order.

If you select another discount from this list, a replacement will occur.

You can delete or replace any discount applied in any way (manually, automatically or by card).